Color pictures, warm and cold

Quick answer：

Warm and cold colors in color pictures refer to the psychological effects of colors on the viewer. Warm colors (like red, orange, and yellow) tend to evoke feelings of warmth, energy, and excitement, while cold colors (like blue, green, and purple) are associated with calmness, serenity, and distance. This concept is often used in art, design, and photography to convey specific moods or emotions.